Stalwart racing fans tough out the rain to have their Kentucky Derby Experience including their mint juleps at Churchill Downs May 4, 2013 in Louisville, Kentucky. (Skip Dickstein/Times Union)

Stalwart racing fans tough out the rain to have their Kentucky Derby Experience including their mint juleps at Churchill Downs May 4, 2013 in Louisville, Kentucky. (Skip Dickstein/Times Union)

Photo: SKIP DICKSTEIN

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Stalwart racing fans tough out the rain to have their Kentucky Derby Experience at Churchill Downs May 4, 2013 in Louisville, Kentucky. (Skip Dickstein/Times Union)

Stalwart racing fans tough out the rain to have their Kentucky Derby Experience at Churchill Downs May 4, 2013 in Louisville, Kentucky. (Skip Dickstein/Times Union)

Photo: SKIP DICKSTEIN

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Stalwart racing fans tough out the rain to have their Kentucky Derby Experience at Churchill Downs May 4, 2013 in Louisville, Kentucky. (Skip Dickstein/Times Union)

Stalwart racing fans tough out the rain to have their Kentucky Derby Experience at Churchill Downs May 4, 2013 in Louisville, Kentucky. (Skip Dickstein/Times Union)

Photo: SKIP DICKSTEIN

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Stalwart racing fans, Michelle Schoengard, left and Kelly Johnson both of Louisville tough out the rain to have their Kentucky Derby Experience including their mint juleps at Churchill Downs May 4, 2013 in Louisville, Kentucky. (Skip Dickstein/Times Union) less

Stalwart racing fans, Michelle Schoengard, left and Kelly Johnson both of Louisville tough out the rain to have their Kentucky Derby Experience including their mint juleps at Churchill Downs May 4, 2013 in ... more

Photo: SKIP DICKSTEIN

Photo gallery: A damp day for Kentucky Derby

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It looks like the must-have accessory for the stylishly appointed at this year's Run for the Roses at Churchill Downs in Louisville, Ky. is the plastic bonnet cover. Post time for the thoroughbred horse race known as the first jewel in Triple Crown is 6:24 p.m. today, Saturday.